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Патент USA US2410022

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Oct.29, 1946.
‘
>.>J.A.¢QQK
'
‘25,410,015
APPARATUS ‘FOR FILLING LIFE PRESERVERS AND THE LIKE
FiledvJan. 5, 1944
2 Sheets-Sheet l
TOR
Wm- M
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ATTORNEYS
Oct. 29, 1946.
J,A_¢o¢K
-
'
2,410,015
APPARATUS FOR FILLING LIFE PRESERVERS AND THE LIKE
FiledJ-anfs, 1944‘
-
2 sheets-sheet 2 }
ATTORNEYS
Patented Oct. 29, l946
2,410,015
UNITED STATES PATENT OFFICE
2,410,015
APPARATUS FOR FILLING LIFE
PRESERVERS AND THE LIKE
James A. Cook, Buffalo, N. Y., assignor to Birma
Manufacturing Company, Inc., Buffalo, N. Y.
Application January 5, 1944, Serial No. 517,075
13 Claims.
(Cl. 226-19) '
1
2
This invention relates to apparatus for pack
ing loose buoyant material, such for example as
?brous materials, into circular casings.
‘
In the manufacture of ring life preservers, the
casings have heretofore been ?rst sewn in circu
Fig. 8 is a view showing the end of a packed
\ casing.
Fig. 9 is a fragmentary plan view of a life pre
server with the two ends thereof ready for sewing.
Fig. 10 is another fragmentary plan view of a
.life preserver having the ends of the casingr tele
lar form so as to leave open ends and then kapok
scoped ready for sewing.
or other ?brous material was stuffed by hand
into the opposite open ends of the casings. This
Fig. 11 is a perspective view of a block which
is a very time-consuming operation, since only
may be used to hold the ?brous material in the
small amounts of kapok can be tamped into the 10 casing.
casings at one time. The tamping is generally
My improved apparatus operates on casings of
curved form, for example, on casings of substan
tially circular form, such as the ring life pre
is uniformly compressed or packed in all parts of
server casing shown in Fig. 5, having open ends
life preservers.
15 into which the materialwith which the casings
It is an object of this invention to provide an
are to be stuffed is inserted, and after completing
apparatus bymeans of which buoyant material
the packingor stu?ing operation, the two open
can be packed into circular casings. A further
ends are sewn together as heretofore. Casing A
object is to provide an apparatus of this kind by
of this type is shown in Fig. 5, and my apparatus
means of which the ?brous material may be uni 20 includes a tube of relatively thin metal which‘
formly packed into all parts of the casings. It
may be inserted into one end of the casing to ?t
is also an object of this invention to provide an
fairly snugly within the same. The tube prefer
apparatus by means of which the time required
ably has approximately the same curvature as
for packing buoyant material into circular cas
the ?nal curvature of the stuffed casing. The
ings is greatly reduced. A further object is to 25 apparatus also includes a ram which is formed to
provide an apparatus of this type with power
cooperate with the tube to packthe material into
actuated means for compressing the buoyant
the interior of the tube and the casing. The
curved tube and ram may be any desired length,
material to uniform density in all parts of the
casing. Another object is to provide an appa
varying from approximately half of the length
ratus of this kind having a curved tube which 30 of the casing A to approximately the full length
may be inserted into a portion of the casing and
thereof, but preferably the tube is not much more
than half the length of the casing, and the two
a ram of curved form which enters the tube to
halves of‘ the casing are ?lled successively and
compact the buoyant material into the casing.
independently of each other \by ?rst inserting
Other objects and advantages of this invention
will appear from the following description and 35 the tube into one half of the casing, then packing
the material into the casing and then inserting
claims.
In the accompanying drawings:
the tube into the other half of the casing. While
the ?rst half of the casing is being ?lled, a clamp
Fig. 1 is a top plan View, partly in section, of
or other suitable stopper is provided at approxi
an apparatus embodying this invention for use
in packing loose buoyant material into substan 40 mately the middle portion of the casing to con
tially circular casings.
?ne the ?rst half of the material to the ?rst half
of the casing. For example, a clamp may lbe
Fig. 2 is a fragmentary front elevation thereof,
used, as shown in Figs. 5 and 6, which may in
partly in section.
clude a pair of rods or bars l5 suitably connected
Fig. 3 is a fragmentary View of the end of the
45 at one end, for example, by means of a pivot I6,
ram.
Fig. 4 is a diagrammatic view showing a valve
and having a hook‘ portion I1 adjacent to the
and piping for controlling the pneumatic mecha
other end of the clamp so that the two rods or
bars may be held in clamping engagement with
nism for compressing the ?brous material.
the casing A, as shown in Fig. 6. After one half
Fig. 5 is a top plan view of the casing of a ring
life preserver prior to packing loose buoyant 50 of the casing has been packed with the material,
done with a stick and it is dif?cult to produce
life preservers by this means in which the kapok
material into the same.
'
Fig. 6 is a fragmentary sectional view thereof,
on line E—-6, Fig. 5.
the clamp is removed, whereupon the casing will
have the appearance shown in Fig. '7, and the
other half of the casing may then be operated
upon.
Fig. 7 is a plan view of a life preserver after
While the apparatus shown is primarily con
half of the same has been ?lled with buoyant 55
material.
.
structed for ?lling the casings of ring life‘ pre
2,410,015
4
3
servers with kapok or other buoyant ?brous ma
terials, yet it is not intended to limit this inven
end of the tube to the other, the stulfed casing
being s-u?'iciently ?exible to permit the tube to be
bent out of the path of movement of the lever.
tion to such use, since the invention is applicable
Preferably, however, the tube 20 is of more 01'
to devices other than life preservers and for use
on materials other than ?brous materials, such 5 less spiral form so that the discharge end of the
tube will be out of alinement with the lever, for
as chips or granular materials.
example, above the lever as clearly shown inlFig.
In the accompanying drawings, 25), Figs. 1 and
2. This is desirable because it enables the lever
2, represents the tube of the apparatus, which
and ram to swing clear of the stulied half of the
may be mounted in ?xed position in any suitable
or desired manner. For example, the end of the 10 casing during the stuffing of the second half of
the casing without requiring the stu?ed half or"
tube which receives the ?brous material may be
the casing to be ?exed or bent. It is also easier
suitably secured to an upright ?ange or extension
to pack the rings uniformly if they do not. have
is of a bracket, the base 2| of which is mounted
a bend therein to clear the lever 25 and ram 25.
on a table 22 or other support. The tube is, con
sequently, supported at one end only so that it 15 If the tube 2ii-is of spiral form or inclined as
shown in Fig. 2, the ram 25 must be correspond
is possible to insert the other end of the tube into
ingly inclined or of spiral form, and should be
an open end of the casing and then pull the cas
mounted on the support in such a manner that
ing along the tube until the open end of the cas
the head 21 of the ram will follow the contour of
ing is approximately at the receiving end of the
tube, thus telescoping the casing over the tube, as 20 the tube 20. Any suitable means for producing
this movement of the ram may be provided, and
clearly shown in Figs. 1 and 2.
in the construction shown for this purpose, the
25 represents a ram which may be made of rod
lever 26 is rigidly secured at one end thereof to a
or bar of metal curved substantially to the same
pivot member or pin 3'! which is rotatable in a
radius as the middle portion of the tube. One
end of this ram is rigidly secured to a suitable 25 cylindrical sleeve 38 which may be formed in
tegral with or secured to the base 2! of the brack
ram actuating device, which may be in the form
of a lever 26, pivoted to swing about an axis con
centric with, the tube and the ram. The other
et l9 which is secured to the table 22. In order to}
provide the vertical movement of the lever and‘
ram, the pivot or bearing pin 31 is provided at
end of the ram may be provided with a head 2?. I
have found that this head may vary in size and 30 the lower end thereof with an enlargement or
drum so having spiral threads 4| formed thereon
shape, depending upon the material with which
to cooperate with corresponding internal threads
the casings are stuffed. When working on kapok
formed in a sleeve 42 which may also be formed
or other ?brous material, the head should be of
integral with or rigidly secured to the base?! of
such size as to leave considerable margin between
the outer edges of the head and the inner surface 35 the bracket #9. The'pitch of the screw threads
of the tube so that loose ?brous material will not
4| must, of course, be such that as the lever :26 is
swung in a direction to move the ram into the
jam or bind between the head and the tube. The
head should also be as large as possible without
tube, the ram will rise or move vertically to the
causing binding of the ?brous material so that
desired extent, so that the head 2? thereof will
the fibrous material may be compressed to the 40 remain at substantially the same distance from
the walls of the tube 2!} throughout its travel in
desired extent by a- single movement of the ram
into the tube. When packing the casings with
the tube. It will be obvious that when the lever
granular material, such as ground cork, the head
23 is swung in a direction to move the ram into
should be somewhat larger in size, to leave a
and out of the tube, the pivot 31 will be raised
or lowered by the screw threads and will produce
smaller clearance with the interior of the tube.
The lever 26 may be of any suitable or desired
a corresponding rising and lowering of the lever
length to make it possible to compress the ?brous
and of the ram.
material within the tube manually to a very con
siderable extent. Preferably the ram is also pro
vided with suitable means whereby the ?nal pres
sure exerted on the ?brous material may be pro
If desired, the ram may be made in two parts,
the leading or outer part thereof being movable
50 into a position to provide free access to the re
ceiving end of the tube 26. Any suitable or de
sired construction may be employed for this pur
pose, and in the construction illustrated by way
may be provided for this purpose, and in the con
of example, the end of the rain on which the head
struction shown by way of example, the lever 26 55 21 is formed comprises a part :35 which is pivotally
is provided with an eye 29 adapted to cooperate
mounted on the main or body portion 25 of the
with a hook 36 mounted on the end of a piston
ram so that this part 45 may be swung upwardly
rod or plunger 3| connected with a‘ piston ar
vabout a pivot :26, the pivotal connection being
ranged in a cylinder 32. This piston may be ac
preferably so formedthat when in its lower posi
tuated pneumatically or hydraulically. Conse 60 tion, as shown in Fig. 1, the" extension at of the
quently, when the piston rod 3| is connected with
ram will engage a suitable stop Al, Fig. 3, so that
the lever 25, as shown in broken lines in Fig. 1,
this extension will form a continuation of the
the lever 26 may be actuated by fluid pressure in
ram. Any other suitable means for movably
the cylinder 32 to produce the ?nal compression
mounting the end portion of the ram thereon to
of the ?brous material. In order to enable the 65 facilitate access to the receiving end of the tube
duced by suitable power operated mechanism.
Any suitable or desired power operated means
cylinder 32 to adapt itself to the movement of
2!] may be provided.
'
,
'
the lever 26, the end of the cylinder remote from
In the carrying out, the operation of my ap
the lever is preferably pivotally mounted at 33,
paratus, I divide the amount of ?brous material
as shown in Fig. 2 and the other end of the cylin
to be packed into the casing into a number of
der rests loosely upon a suitable support or bar 70 different substantially equal parts‘. For exam
36, so that the cylinder may move up or down or
laterally as may be required by the movement of
the lever 26.
.
,
,
.'
ple, it may be desirable to divide the amount of
material to be packed into a half casing into three
or more approximately equal parts, the number
of parts depending upon the size of the casing.
' Thetube 29 may be arranged horizontally on
the table so that the lever may swing from one 75 This is preferably done by weighing the material
2,410,015
5
and dividing it into charges. When the ?rst
charge of loose material is stuffed into the tube
and the ram forced into the tube to compress the
?brous material, the casing A will be ?lled ap
proximately from the clamp shown in Fig. 5, to
the line i therein. During the compressing of
the ?brous material, it is desirable to press the
casing against the tube to resist removal of the
casing from the tube. This can be done easily by
grasping the casing by hand during the com
pressing of the ?brous material, so that the cas
ing will only be slid from the tube when the ?
brous material is ?rmly compacted within the
tube.
When the plunger enters the tube, the loose
material in the tube is ?rst compressed in the
tube approximately to the desired density. Upon
further movement of the plunger into the tube,
this ?rmly compacted material will then be dis
charged from the discharge end of the tube into
the casing while the casing slides from the tube;
Since the tube is made ‘of thin material and is
only slightly smaller in diameter than the cas
ing, the ?brous material will expand only to a
slight extent on leaving the discharge end of the
tube, and will thus exert considerable pressure on
the wall of the casing so that the same will be
at 52 in Fig. 10, whereupon the ends of the casing
may be sewn together in the usual manner.
. The actuation of the plunger 3i may be e?ected
in any suitable or desired manner by controlling
the ?ow oi" ?uid to and from opposite sides of the
cylinder 32.‘ In Fig. 4, I have shown diagram
matically tubes or conduits t0 and El leading to
opposite ends of the cylinder, and a valve 62
which alternately connects the opposite ends of
10 the cylinder with ?uid under pressure from a
source of supply connected with the conduit 63.
It will be noted that when the movable valve
member M is in the position shown in Fig. 4,
?uid pressure is transmitted to the pipe 69 while
15 pressure from the pipe 6| is discharged through
the exhaust opening 65 of the valve. When the
valve M is swung in a clockwise direction through
an angle of about 90 degrees, ?uid pressure will
be conducted through the conduit BI and the
20 conduit 60 will be connected to exhaust port 65 of
a the valve.
Valve 62 may be mounted on or near
the table 22, as shown in Figs. 1 and 2, and the
valve may have its stem 6'! connected to a hand
lever 68, and one end of this lever may be con
25 nected by means of a link 69 to a foot treadle 19
to facilitate the control of the power operated
mechanism for moving the lever 26. Any other
suitable means for controlling the power for op
tightly stuffed. Fibrous material, such as kapok
erating this lever may be provided.
when compressed into a casing will remain in
When life preservers are stuffed with loose ma
its compressed condition in the casing without 30
terial by means of‘ the method and apparatus
material tendency to again become loosened or
herein described, they are of uniform hardness
flow out of the tube. Consequently, when the
throughout the surface, there being no particu_
plunger is withdrawn after compressing the ?rst
charge of ?brous material approximately to the ' any hard or soft spots, so that there will. be the
line i shown in Fig. 5, this compressed material 35 minimum of strains on the casing, thus increasing
the life of the life preservers.
will not change its shape materially. Conse
By means of the apparatus described, the buoy~
quently, the second charge of loose, material is
ant 0r ?brous material can be quickly and easily
inserted into the open end of the tube 20, and
packed into the casings and in place of the slow
when compressed, the half casing will be ?lled
approximately to the line 2 and will also be ap 40 and laborious tamping of the material by hand
into the casings, only one movement of the ram
proximately half slid off of the tube .20. The
is required for each charge of material, thus
next charge will ?ll the casing approximately
greatly reducing the time required to produce life
to the line 3 and the ?nal charge is then com
preservers or other stuffed articles. The ?rst part
pressed in the tube and discharged into the end
of the movement of the ram into the tube 20 can,
portion of the casing. Preferably a block of
of course, be easily effected by hand, since very
wood or other material 50 is placed into the
little force is required for the initial compression
end of the casing for temporarily holding the ?
brous material therein and this block may be ' of the material. After this initial movement, the
power is applied to the ram, and since this power
held in place in any suitable manner. I have
may be kept uniform by control of the ?uid pres
found, for example, that one or more skewers 5|
sure supplied to the cylinder 32, a uniform com
may be pinned through the end of the casing be
pacting of all charges of the material will result.
yond the outer face of the block tohold the block
in place.
As the casing becomes ?lled, it is slid off the tube
When half of a casing is ?lled with the com
by the plunger and in the construction shown,
pacted loose material and the same is con?ned 55 the ?lled portion of the casing rests upon the ram
25. In place of gripping the casing by hand to
within the casing, for example, by means of the
yieldingly hold it on the tube, other gripping
block, the clamp i5 is removed and the empty
means may, of course, be employed.
half of the casing is then slid over the tube 20.
I claim as my invention:
If the material is tightly stuiied into the casing,
1. Apparatus for packing loose material into
it is very desirable to have the tube 2!! of spiral 60
substantially circular open ended casings, includ
form, so that no bending or de?ection of the cas
ing a tube open at both ends and having a curva
ing is necessary to clear the lever 26, which would
ture corresponding to that of the casing and
result in the bent part of the tube being stuffed
which may be inserted into a casing to be ?lled,
less tightly than other parts of the tube. The
65 a ram .having a curvature corresponding to that
stuf?ng of the empty half of the casing with loose
of the tube, means for producing relative move
material is then continued as already described
ment of said ram and tube in a curved path to
in connection with the ?rst half of the tube, and
cause relative movement of said ram into and out
another block of wood may be placed into the
of said tube to compact loose material inserted
other end of the casing and held in place by
into the tube and to discharge the compacted ma
skewers or other means. The ?lled casing is then
terial from the tube into the casing.
ready for sewing. Before the sewing operation
2. Apparatus for packing loose material into
is started, the two blocks of wood are removed
substantially circular open ended casings, includ~
from the ends of the casing and one end of the
ing a tube open at both ends and having a curva
casing is telescoped into the other end, as shown 75 ture corresponding to that of_ the casing and
2,410,015
7
8
about which a casing to be ?lled may be tele
is connected and which is pivoted substantially
scoped, means for mounting one end of said tube
on the axis of curvature of said tube, and a
on a ?xed support with the remainder of said
plunger actuated by '?uid under pressure and
tube in spaced relation to said support, and a ram
constructed to be connected with said lever for
having a curvature substantially the same as the 5 swinging the same to move said ram into said
curvature of the middle portion of said tube and
mounted to move into and out of said tube for
tube.
8. An apparatus for packing loose ?brous ma-~
terial into substantially circular open ended cas
compressing material placed‘ into said end of
ings, including a tube having a curvature corre
said tube and discharging the same from the
10 sponding to that of the casing and of not mate
other end of said tube into said casing.
rially more than half the length of the casing,
3. Apparatus for packing loose material into
substantially circular openended casings, includ“
said tube being open at both ends and formed to
ing a tube open at both ends and having a curva
have one end thereof inserted into a casing and
ture corresponding to that of the casing and
to have ?brous material supplied to the other
about which a casing to be ?lled may be tele
end thereof, means for securing said other end
scoped, a ram having a curvature corresponding
of said tube in ?xed relation to the apparatus,
and an arc-shaped ram having one end thereof
to that of the tube and movable along a curved
path into and out of said tube to compact loose
adapted to enter into said other end of said tube
and having the opposite end of said ram pivoted
material inserted into the tube and to discharge
on an axis substantially coinciding with the axis
the compacted material from the tube into the
casing, and power actuated means for producing
of curvature of said tube, said ram having a head
movement of said ram.
of materially larger transverse area than the
body portion of said ram.
4. Apparatus for packing loose material into
open ended casings of substantially circular form,
9. An apparatus for packing loose ?brous ma
said apparatus including a tube open at both 25 terial into substantially circular open ended cas
ings, including a tube having a curvature corre
ends and having a curvature similar to that of
the casing and of a diameter only slightly smailer
sponding‘to that of the casing andof not mate
rially more than half the length of the casing,
than the inside diameter of the casing to be filled
and supported in ?xed relation to said apparatus
said tube being open at both ends and formed
at one end thereof, and a ram for cooperation
to have one end thereof inserted into a casing
with said tube, said ram being pivoted about an
and to have ?brous material supplied to the
axis substantially concentric with the axis of
curvature of said tube to enable said ram to move
other end thereof, means for securing said other
end of said tube in ?xed relation to the appa
into and out of said supported end of said tube
throughout substantially the length of said tube. .
5. An apparatus for packing loose material into
substantially circular casings, including a thin
tube shaped to ?t snugly inside the casings and.
open at both ends and having a curvature sub
stantially similar to that of the casings to be 40
?lled, means for securing one end of said tube to
a ?xed support, a ram having a curvature corre
sponding to the curvature of the middle portion
of said tube and of suf?cient length to extend
substantially from one end to the other of said
tube, and a lever to which one end of said ram
ratus, and an arc-shaped ram having one end
thereof adapted to enter into said other endof
said tube and having the opposite end of said ram
pivoted on an aXis substantially coinciding with
the axis of curvature of said tube, said ram hav
ing a head of materially larger transverse area
than the body portion of said ram, the portion
of said ram adjacent to said head being movable
relatively to the body portion of said ram to move
out of operative relation to said other end of said
tube to afford access thereto.
10. An apparatus according to claim 9 char
acterized in that the end portion of the ram is
is connected and which is pivoted substantially
pivoted on the body portion thereof to swing
on the axis of curvature of said tube._
relatively to the same to provide access to said
other end of said tube, and means for holding
said pivoted part of said ram in operative relation
_
6. An apparatus for packing loose material
into substantially circular casings, including a
thin tube shaped to ?t snugly inside the casings
and open at both ends and having a curvature
substantially similar to that of the casings to be
to the body portion thereof when said ram is
inserted in said tube.
'
11. An apparatus for packing loose material
?lled, means for securing one end of said tube to
into substantially circular open ended casings,
a ?xed support, a ram having a curvature cor
including a tube having a curvature correspond
responding to the curvature of the middle por
ing to that of the casing and of not materially
more than half the length of the casing, said
tube being open at both ends and formed to
have one end thereof inserted into a casing and
to have material supplied to the other end there
tially on the axis of curvature of said tube, and
of, means for securing said other end of said
power actuated means adapted to be connected
tube in ?xed relation to the apparatus, so that
to said lever for imparting movement of the ram
said tube occupies a substantially spiral position,
into said tube.
'
a ram having a, curvature corresponding to the
'7. An apparatus for packing loose material into 65 middle portion of said tube and also of substan
substantially circular casings, including a thin
tially spiral shape, and means for mounting said
tube shaped to ?t snugly inside the casings and
ram to enable the same to swing into and out of
said tube.
open at both ends and having a curvature sub
stantially similar to that of the casings to be
12. An apparatus for packing loose material
?lled, means for securing one end of said tube 70 into substantially circular open ended casings,
to a ?xed support, a ram having a curvature cor
including a, tube having a curvature correspond
responding to the curvature of the middle por
ing to that of the casing and of not materially
tion of said tube and of sufficient length to ex
more than half the length of the casing, said tube
tend substantially from one end to the other of
being open at both ends and formed to have one
said tube, a lever to which one end of .said ram 75 end thereof inserted into a casing and to ‘have
tion of said tube and of su?icient length to ex-.
tend substantially from one end to the other
of said tube, a lever to which one end of said
ram is connected and Which is pivoted substan 60
2,410,015
material supplied to the other end thereof, means
for securing said other end of said tube in ?xed
10
13. An apparatus for packing loose material
into substantially circular open ended casings,
relation to the apparatus, so that said tube occu
including a tube open at both ends and of sub—
pies the substantially spiral position, a ram hav
stantially spiral shape and of a, length not ma
ing a curvature corresponding to the middle por Cl terially in excess of half of the length. of the
tion of said tube and also of substantially spiral
casing, means for mounting the‘lower end of
shape, and a pivot pin substantially coaxial with
said tube in ?xed relation to the apparatus, a
the curvature of said tube and to which said ram
ram pivotally mounted substantially concentri
is secured, and means ‘for imparting vertical
cally With said spiral tube and also of spiral form,
movement to said pivot pin during the swinging 10 and means for raising and lowering said ram dur
of said ram to cause said ram to swing in a sub
ing the swinging of the same into and out of
stantially spiral path substantially coinciding
said tube.
with the middle portion of said tube.
JAMES A. COOK.
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